The actress -- who told Us her life was "absolute hell" after getting dumped by Samantha Ronson -- was all smiles at midnight Wednesday as she arrived at the Shamrock Social Club tattoo parlor (the same spot where she and Lily Allen got matching "Shhhh" tattoos on their fingers). She patiently waited in line with her 15-year-old sister Ali before she got her wrist inked. She left around 3 a.m.

Just after 12:15 a.m. Thursday, Dina paid the bill and the family left.

For more on Lohan -- including an explosive interview where she laughs off friends who say she's suicidal and should be institutionalized and talks about being "so alone" after her break-up -- pick up the newest issue of Us Weekly, on stands now.